<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>id选择器,内部样式表</title>
		<style>
			#logo{
				font-size: 9px;
				color: firebrick;
			}
		</style>
	</head>
	<body>
		<h1>你好，我是渣渣灰</h1>
		<h1 id="logo">大闸好，我是渣渣灰</h1>
	</body>
</html>